CN107026584B - Method for being charged and discharged to piezoelectric-actuator - Google Patents
Method for being charged and discharged to piezoelectric-actuator Download PDFInfo
- Publication number
- CN107026584B CN107026584B CN201710063193.9A CN201710063193A CN107026584B CN 107026584 B CN107026584 B CN 107026584B CN 201710063193 A CN201710063193 A CN 201710063193A CN 107026584 B CN107026584 B CN 107026584B
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- Prior art keywords
- charging
- discharge
- pulse
- piezoelectric
- value
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- 238000000034 method Methods 0.000 title claims abstract description 20
- 238000007599 discharging Methods 0.000 claims abstract description 6
- 241000512259 Ascophyllum nodosum Species 0.000 claims description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 210000001367 artery Anatomy 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000005923 long-lasting effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/02—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing linear motion, e.g. actuators; Linear positioners ; Linear motors
- H02N2/06—Drive circuits; Control arrangements or methods
Abstract
The present invention relates to the methods for being charged and discharged to piezoelectric-actuator, wherein measure the piezoelectric voltage applied at piezoelectric-actuator, by measured piezoelectric voltage compared with two adjustable charge or discharge limiting values, when being less than or equal to the value of the first charging limit value, charging pulse with the first amplitude and duration is applied at the element, when being greater than the first charging limit value and less than the value of the second charging limit value, charging pulse with the second amplitude and duration is applied at the element, or when being greater than or equal to the value of the first electric discharge limiting value, discharge pulse with the first amplitude and duration is applied at the element, in the value for limiting value of discharging less than the first electric discharge limiting value and greater than second, discharge pulse with the second amplitude and duration is applied at the element, wherein Second charging and/or discharge pulse amplitude and/or duration are less than or the shorter than first charging and/or discharge pulse amplitude or duration.
Description
Technical field
Piezoelectric-actuator is especially used in valve (Ventilen), such as fuel injection valve, because of the piezoelectricity
Executive component can quickly respond (ansprechen) and apply big power.But the piezoelectric-actuator
Applied to the pressure reducing valve in the pressure regulation spectrum for gas-powered formula motor vehicles, as this is in DE 10 2,005 019 404
Described in A1.
Background technique
Be applied to piezoelectricity adjustable type CNG pressure reducing valve (compressed natural gAs(compressed natural gas)) in feelings
Under condition, the voltage at piezoelectric-actuator allows for accurately and special with the thick-and-thin time in wide voltage range
Property is adjusted.Because piezoelectric-actuator (Piezo-Aktor) is showed as capacitor in the first approximation, in piezoelectricity
In the case where small voltage at executive component, the small energy being transferred on piezoelectric-actuator already leads to big voltage and becomes
Change, and needs the big energy on piezoelectric-actuator to be transferred in the case where high voltage at piezoelectric-actuator
(Energiemengen), to cause the noticeable voltage change at piezoelectric-actuator.It is attached in a manner of becoming complicated
That add is (Erschwerend kommt hinzu), the inherent characteristic of (geschalteter) power output stage connected with
Development trend is reversed.
If energy packet (Energiepakete) is selected sufficiently small for low pressure piezoelectric voltage, charging process exists
In the case where high voltage inadequately long lasting for or energy packet even be no longer enough to overcome EMV measure, and charge
Electric current fades away from certain voltage.If selecting energy packet sufficiently large for high voltage, the energy packet
It is too big in the case where small voltage for enough resolution ratio.
Although can use the voltage that analog electronic equipment makes the size of energy packet be matched with piezoelectric-actuator, so that with
Independently there is nearly constant charging current in voltage.However this needs not inappreciable component to expend.If microcontroller
Device calculates each individual pulse, then may also reach same situation.Because being used usually using relatively high switching frequency
It is charged and discharged in the piezoelectric-actuator for pressure or fuel quantity adjusting, however this means microcontroller
Significant load.
Summary of the invention
The task of the present invention is make to realize using piezoelectric-actuator without big consuming reported as precisely as possible
Pressure adjust.
By solving the task according to the method for being charged and discharged to piezoelectric-actuator of claim 1.
Explanation is advantageously improved scheme in the dependent claims.
Therefore, in the method for being charged and discharged to piezoelectric-actuator, measurement is applied to piezoelectricity and executes member first
Piezoelectric voltage at part, and then by measured piezoelectric voltage and two adjustable charge or discharge limiting value ratios
Compared with.In order to charge to piezoelectric-actuator, in the case where being less than or equal to the piezoelectric voltage value of the first charging limit value, have
Adjustable first amplitude and the charging pulse of the first duration are applied at piezoelectric-actuator, and are being greater than first
Charging limit value and be less than biggish second charging limit value piezoelectric voltage value in the case where, have it is adjustable second vibration
Width and the charging pulse of the second duration are applied at piezoelectric-actuator, wherein the second charging pulse amplitude and/or
Two charge pulse durations are less than the first charging pulse amplitude or shorter than the first charge pulse duration.
In order to discharge, in the case where being greater than or equal to the piezoelectric voltage value of the first electric discharge limiting value, have adjustable
First amplitude and the discharge pulse of the first duration are applied at piezoelectric-actuator, and less than the first electric discharge limit
In the case where the piezoelectric voltage value of value and limiting value of discharging greater than lesser second, there is adjustable second amplitude and second
The discharge pulse of duration is applied at piezoelectric-actuator, wherein the second discharge pulse amplitude and/or the second electric discharge arteries and veins
The duration is rushed less than the first discharge pulse amplitude or shorter than the first discharge pulse duration.
Because having (stecken) very small calculating in switching the routine program continually run in this way to expend, institute
With can be used unusual low-power to cheap microcontroller.Using the method according to the invention work adjuster this
Outer offer following advantages, until relatively large pulse can also be used close to target voltage, and can be when possible the latest
Between point be switched to reach target voltage resolution ratio necessary to lesser impulse magnitude, and not may require that significant meter thus
It calculates and expends.
It is advantageously improved in scheme in one kind of the method according to the invention, after previously given time interval
(nach vorgegebenen zeitlichen Abst nden) is charged and discharged limiting value and/or is charged and discharged pulse
Amplitude and/or charging and discharging pulse duration are confirmed as the function of measured piezoelectric voltage and target voltage.
In another refinement, it is charged and discharged limiting value and/or is charged and discharged pulse amplitude and/or charging and puts
Pulse duration time is confirmed as the function of other parameters, and one of other parameters can be temperature.
By determining impulse magnitude and the limit and it is thus determined that be conveyed to the energy of piezoelectric-actuator, power can be made
Demand is optimally matched with voltage situation.
The method according to the invention can be used to be charged and discharged piezoelectric-actuator in a particularly advantageous manner, to
Operate the valve of pressure reducing valve.
Detailed description of the invention
Figure shows the step of the method according to the invention and its improvement project in a manner of open-and-shut.Here,
Fig. 1 shows the method according to the invention for charging to piezoelectric-actuator,
Fig. 2 shows the method according to the invention for discharging piezoelectric-actuator,
Fig. 3 is shown for calculating the side for being charged and discharged pulse from measured piezoelectric voltage and when necessary other parameters
Method.
Specific embodiment
In Fig. 1, small or big charging pulse is it is meant that small or big energy is transmitted from energy source herein
To piezoelectric-actuator, the energy source is for example via DC-DC converter and the manipulation for being used for the piezoelectric-actuator to be supplied
Circuit connection.Energy can be adjusted herein via charging pulse amplitude and/or charge pulse duration t_glp, t_klp.
The method for discharging piezoelectric-actuator is shown in FIG. 2.Energy herein can be via electric discharge arteries and veins
It rushes amplitude and/or discharge pulse duration t_kelp, t_gelp is adjusted.
It is schematically shown in Fig. 3: the first charging limit value Usk and the second charging limit value Uk, the first electric discharge limit
The electric discharge limiting value Ug of value Usg and second and charge pulse duration t_glp, t_klp and discharge pulse duration t_
Kelp, t_gelp and the volume at the piezoelectric voltage UPiezo and piezoelectric-actuator that are applied at piezoelectric-actuator and to be measured
Constant voltage Usollwert in relation to ground and and other possible parameters, such as temperature it is related be determined.
It is carried out in the determination routine program that in relative rarity (selten) (per every about 2ms) is run, wherein can
Described value is calculated with the extraction from characteristic value table or the function by means of being programmed.
Claims (5)
1. the method for being charged and discharged to piezoelectric-actuator, wherein measuring the pressure applied at the piezoelectric-actuator
Piezoelectric voltage (UPiezo),
By the measured piezoelectric voltage (UPiezo) and adjustable first charging limit value (Usk) and adjustable second
Charging limit value (Uk) or adjustable first electric discharge limiting value (Usg) and adjustable second electric discharge limiting value (Ug) ratio
Compared with,
In the case where being less than or equal to piezoelectric voltage (UPiezo) value of the first charging limit value (Usk), have adjustable
The charging pulse of first charging pulse amplitude and the first charge pulse duration (t_glp) is applied to the piezoelectricity and executes member
At part, and greater than the first charging limit value (Usk) and less than the piezoelectricity of biggish second charging limit value (Uk)
In the case where voltage (UPiezo) value, there is adjustable second charging pulse amplitude and the second charge pulse duration (t_
Klp charging pulse) is applied at the piezoelectric-actuator, wherein the second charging pulse amplitude and/or described
Two charge pulse durations (t_klp) are less than the first charging pulse amplitude or shorter than described first charging pulse continues
Time (t_glp),
Or in the case where being greater than or equal to piezoelectric voltage (UPiezo) value of the first electric discharge limiting value (Usg), have adjustable
Whole the first discharge pulse amplitude and the discharge pulse of the first discharge pulse duration (t_gelp) is applied to the piezoelectricity
At executive component, and it is being less than first electric discharge limiting value (Usg) and is being greater than lesser second electric discharge limiting value (Ug)
Piezoelectric voltage value in the case where, have adjustable second discharge pulse amplitude and the second discharge pulse duration (t_
Kelp discharge pulse) is applied at the piezoelectric-actuator, wherein the second discharge pulse amplitude and/or described
Two discharge pulse duration (t_kelp) were less than the first discharge pulse amplitude or shorter than described first discharge pulse is held
Continuous time (t_gelp).
2. according to the method for claim 1, wherein after previously given time interval, the first charging limit value
(Usk), the second charging limit value (Uk), the first electric discharge limiting value (Usg) and the second electric discharge limiting value (Ug) and/or described first
Charging pulse amplitude, the second charging pulse amplitude, the first discharge pulse amplitude and the second discharge pulse amplitude and/or described first
Charge pulse duration (t_glp), the second charge pulse duration (t_klp), the first discharge pulse duration (t_
Gelp) and the second discharge pulse duration (t_kelp) was confirmed as the letter of the measured piezoelectric voltage (UPiezo)
Number.
3. according to the method for claim 2, wherein the first charging limit value (Usk), the second charging limit value (Uk),
First electric discharge limiting value (Usg) and the second electric discharge limiting value (Ug) and/or the first charging pulse amplitude, the second charging pulse
Amplitude, the first discharge pulse amplitude and the second discharge pulse amplitude and/or first charge pulse duration (t_glp),
When second charge pulse duration (t_klp), the first discharge pulse duration (t_gelp) and the second discharge pulse continue
Between (t_kelp) be confirmed as the functions of other parameters.
4. according to the method for claim 3, one of other parameters are temperature.
5. according to method described in one of the claims, wherein the charging and discharging of the piezoelectric-actuator are used for
Operate the valve of pressure reducing valve.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102016201435.8A DE102016201435B4 (en) | 2016-02-01 | 2016-02-01 | Procedure for charging and discharging a piezo actuator |
| DE102016201435.8 | 2016-02-01 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107026584A CN107026584A (en) | 2017-08-08 |
| CN107026584B true CN107026584B (en) | 2019-07-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710063193.9A Active CN107026584B (en) | 2016-02-01 | 2017-02-03 | Method for being charged and discharged to piezoelectric-actuator |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN107026584B (en) |
| DE (1) | DE102016201435B4 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6981173B2 (en) | 2017-10-24 | 2021-12-15 | 株式会社デンソー | Fuel injection control device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1521934A (en) * | 2003-02-12 | 2004-08-18 | 北京迈特科创技术有限公司 | Optimization method and equipment for output power of vibrating driver, and product made from the same method |
| EP1772952A1 (en) * | 2005-10-06 | 2007-04-11 | Delphi Technologies, Inc. | Injector control method |
| CN101253319A (en) * | 2005-06-07 | 2008-08-27 | 西门子威迪欧汽车电子股份公司 | Method and device for controlling a capacitive load |
| CN103715940A (en) * | 2010-03-19 | 2014-04-09 | 佳能株式会社 | Driving unit of a vibration-type actuator |
| WO2015112028A1 (en) * | 2014-01-22 | 2015-07-30 | Auckland Uniservices Limited | Pliable capacitive structure apparatus and methods |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10016476A1 (en) * | 2000-04-01 | 2001-12-06 | Bosch Gmbh Robert | Diagnosing voltage control for piezoelectric actuator for injection valve involves specifying tolerance band taking into account system and injection conditions |
| JP4161635B2 (en) * | 2002-08-19 | 2008-10-08 | 株式会社デンソー | Fuel injection control device |
| DE102005019404A1 (en) | 2005-04-25 | 2006-10-26 | Korn, Reinhard, Dipl.-Ing. | Safety platform is powered by gas springs mounted in upper area of scissor lift with further lift spring in lower area to assist lifting action |
| JP4702076B2 (en) * | 2006-01-31 | 2011-06-15 | 株式会社デンソー | Piezo injector control device |
| JP4743138B2 (en) * | 2007-03-05 | 2011-08-10 | 株式会社デンソー | Fuel injection device |
| FR2990998B1 (en) * | 2012-05-23 | 2016-02-26 | Continental Automotive France | METHOD FOR CONTROLLING AT LEAST ONE PIEZOELECTRIC FUEL INJECTOR ACTUATOR OF AN INTERNAL COMBUSTION ENGINE |
-
2016
- 2016-02-01 DE DE102016201435.8A patent/DE102016201435B4/en active Active
-
2017
- 2017-02-03 CN CN201710063193.9A patent/CN107026584B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1521934A (en) * | 2003-02-12 | 2004-08-18 | 北京迈特科创技术有限公司 | Optimization method and equipment for output power of vibrating driver, and product made from the same method |
| CN101253319A (en) * | 2005-06-07 | 2008-08-27 | 西门子威迪欧汽车电子股份公司 | Method and device for controlling a capacitive load |
| EP1772952A1 (en) * | 2005-10-06 | 2007-04-11 | Delphi Technologies, Inc. | Injector control method |
| CN103715940A (en) * | 2010-03-19 | 2014-04-09 | 佳能株式会社 | Driving unit of a vibration-type actuator |
| WO2015112028A1 (en) * | 2014-01-22 | 2015-07-30 | Auckland Uniservices Limited | Pliable capacitive structure apparatus and methods |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102016201435B4 (en) | 2022-02-24 |
| DE102016201435A1 (en) | 2017-08-03 |
| CN107026584A (en) | 2017-08-08 |
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Effective date of registration: 20230421 Address after: Regensburg, Germany Patentee after: WeiPai Technology Co.,Ltd. Address before: Hannover Patentee before: CONTINENTAL AUTOMOTIVE GmbH |